窄矩形通道内脉动流过渡特性实验研究  

Experimental Study on Transition Characteristics of Pulsating Flow in Narrow Rectangular Channel

作　　者：张川 谭思超[1] 赵佳宁 刘宇生[1] 高璞珍 张虹 

机构地区：[1]哈尔滨工程大学核安全与仿真技术国防重点学科实验室,黑龙江哈尔滨150001 [2]中国原子能科学研究院快堆研究设计所,北京102413 [3]中国核动力研究设计院核反应堆系统设计技术重点实验室,四川成都610041

出　　处：《原子能科学技术》2013年第9期1539-1543,共5页Atomic Energy Science and Technology

基　　金：中央高校基本科研业务费专项资金资助项目(HEUCFZ1008);核反应堆系统设计技术重点实验室基金资助项目(KZAKA1101);黑龙江省留学归国基金资助项目(LC2011C18)

摘　　要：针对光滑窄矩形通道内简谐脉动流层流一紊流（Re范围为750～4450）过渡特性进行实验研究。研究发现，脉动流加速阶段，摩阻系数大于稳态摩阻系数，而在减速阶段摩阻系数小于稳态摩阻系数。Womersley数对层流一紊流临界Re有显著影响，在脉动流加速阶段，临界Re随Womersley数的增大而减小，而在脉动减速部分则相反。通过实验拟合出一适用于预测临界转捩点的经验公式，且与稳态有着良好的衔接。Experimental study of flow characteristic in smooth narrow rectangular channel under harmonic pulsating flow which covers laminar to turbulent flow （Reynolds number 750～4 450） was carried out. The experimental results show that the frictional factors in acceleration phase of pulsating flow are higher than that in steady state, but lower than that in deceleration phase. Womersley parameter has a significant influence on the critical Reynolds number. The critical Reynolds number decreases with the increase of Womersley parameter in acceleration phase and it is opposite indeceleration phase. An empirical correlation Reynolds number based on the experimental critical Reynolds number in steady state. was developed to predict the critical data, and the correlation can fit with

关 键 词：脉动流 临界转捩点 Womersley数 窄矩形通道 

分 类 号：TL334[核科学技术—核技术及应用]